EP2992834A1 - Verfahren und vorrichtungen zum verriegeln einer chirurgischen vorrichtung auf basis des ladens einer befestigungskartusche in der chirurgischen vorrichtung - Google Patents
Verfahren und vorrichtungen zum verriegeln einer chirurgischen vorrichtung auf basis des ladens einer befestigungskartusche in der chirurgischen vorrichtung Download PDFInfo
- Publication number
- EP2992834A1 EP2992834A1 EP15183379.5A EP15183379A EP2992834A1 EP 2992834 A1 EP2992834 A1 EP 2992834A1 EP 15183379 A EP15183379 A EP 15183379A EP 2992834 A1 EP2992834 A1 EP 2992834A1
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- EP
- European Patent Office
- Prior art keywords
- cartridge
- jaw
- end effector
- anvil
- cam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Images
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/10—Surgical instruments, devices or methods, e.g. tourniquets for applying or removing wound clamps, e.g. containing only one clamp or staple; Wound clamp magazines
- A61B17/105—Wound clamp magazines
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
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- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
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- A—HUMAN NECESSITIES
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- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/0725—Stapler heads with settable gap between anvil and cartridge, e.g. for different staple heights at different shots
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- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07271—Stapler heads characterised by its cartridge
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- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07278—Stapler heads characterised by its sled or its staple holder
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- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
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- A61B2017/2926—Details of heads or jaws
- A61B2017/2932—Transmission of forces to jaw members
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- A61B2017/2946—Locking means
Definitions
- the present disclosure relates generally to locking a surgical device based on loading of a fastener cartridge in the surgical device.
- MIS minimally invasive surgery
- Endoscopic surgery is another type of MIS procedure in which elongate flexible shafts are introduced into the body through a natural orifice.
- distal end effectors engage the tissue in a number of ways to achieve a diagnostic or therapeutic effect (e.g., grasper, cutter, stapler, clip applier, access device, drug/gene therapy delivery device, and energy device using ultrasound, radiofrequency, laser, etc.).
- a diagnostic or therapeutic effect e.g., grasper, cutter, stapler, clip applier, access device, drug/gene therapy delivery device, and energy device using ultrasound, radiofrequency, laser, etc.
- staplers including end effectors for grasping tissue have been developed which secure tissue between two jaws. Staples contained in one of the jaws can be driven into the grasped tissue and deformed to hold the tissue by impinging on the other jaw.
- the staples can form a predetermined pattern (e.g., one or more lines of staples) based upon the configuration of the staples in the one of the jaws.
- the stapler can be a linear stapler, in which the predetermined pattern includes one or more longitudinal lines of staples.
- staplers can be effective to grasp and staple tissue, it can be difficult to grasp and/or staple the tissue based on a variety of factors, such as a size and/or shape of the staple, a thickness and/or toughness of the tissue, etc.
- Some staplers can be refilled after firing staples.
- the staples can be contained in a cartridge which can be removable from the stapler's jaw to allow the stapler to be refilled with staples contained in another cartridge inserted into the jaw.
- this refilling of cartridges can be difficult since the cartridges can be relatively small and accordingly difficult to manipulate and/or properly secure within the jaw. Refilling a stapler with a new cartridge can thus be time consuming and/or can result in an improperly loaded cartridge that can misfire staples or otherwise function improperly during use on a patient.
- the biasing element comprises at least one spring that biases the staple cartridge out of the cartridge jaw when the mating element is not engaged with the corresponding engagement feature such the positive indication comprises misalignment of the staple cartridge with the cartridge jaw.
- the biasing element comprises at least one deflectable spring arm that protrudes radially outwardly from an outer diameter of the end effector to provide the positive indication when the mating element is not engaged with the corresponding engagement feature.
- a surgical stapling device comprises a cartridge jaw, an anvil pivotally connected to the cartridge jaw, and a first cartridge configured to be detachably seated within a channel in the cartridge jaw.
- the first cartridge holds a plurality of staples of a first size and includes a first gap-setting feature defined in an exterior of the first cartridge, wherein a first clamp gap between the cartridge jaw and the anvil is set by the gap-setting feature.
- the stapling device also includes at least one cam plate coupled to the cartridge jaw.
- the cam plate has first and second positions, wherein when the cam plate is in the first position at least one of closure of the anvil and cartridge jaw and firing of the staples into tissue engaged between the anvil and the jaw is prevented, and wherein the first cartridge moves the cam plate from the first position to the second position when the first cartridge is fully seated within the anvil.
- the at least one cam plate is prevented from moving from the first position to the second position when the cartridge is not fully seated within the cartridge jaw.
- the at least one cam plate includes a central aperture having a height at a proximal end that is greater than a height at a distal end.
- the stapling device further comprises a pivot pin constrained within and movable within the central aperture of the at least one cam plate, wherein the pivot pin interconnects the cartridge jaw and the anvil.
- the pivot pin can be movable in both lateral and longitudinal directions within the central aperture.
- a second cartridge can be configured to be detachably seated within the channel in the cartridge jaw.
- the second cartridge holds staples of a second size and includes a second gap-setting feature defined in an exterior of the second cartridge, wherein a second clamp gap between the cartridge jaw and the anvil is set by the second gap-setting feature, and wherein the first clamp gap is different from the second clamp gap.
- a surgical fastening device comprises an elongate shaft and an end effector coupled to a distal end of the elongate shaft, wherein the end effector includes a cartridge jaw and an anvil pivotally coupled to one another and movable between an open position and a closed position in which tissue can be engaged therebetween.
- the fastening device also includes a cam pin disposed within a cam slot formed in the end effector, wherein the cam pin having first, second, and third positions within the cam slot, and wherein movement of the cam pin within the cam slot between the second and third positions is effective to change a distance between a proximal end of each of the cartridge jaw and the anvil.
- the fastening device further includes a staple cartridge configured to be removably disposed within a channel formed in the cartridge jaw and including a plurality of staples disposed therein.
- the staple cartridge is configured to cause the cam pin to move out of the first position and into one of the second and third positions when the staple cartridge is fully seated within the cartridge jaw, and the cam pin is prevented from moving out of the first position when the staple cartridge is not fully seated within the cartridge jaw.
- the cam pin When the cam pin is in the first position, the anvil and cartridge jaw are held in the open position and prevented from moving to the closed position. Alternatively, when the cam pin is in the first position, the anvil and cartridge jaw are freely movably between the open and closed positions, and actuation of the device to fire staples from the staple cartridge is prevented.
- the cam slot has a height at a proximal end that is greater than a height at a distal end of the cam slot.
- the cam slot can be formed in at least one shuttle positioned adjacent to a sidewall of the cartridge jaw. In one aspect the at least one shuttle is biased distally and slidable longitudinally.
- a method of attaching a staple cartridge to an end effector of a stapling device comprises positioning a staple cartridge in a channel formed within a cartridge jaw of an end effector of a surgical stapling device, wherein the cartridge jaw has an anvil pivotally coupled thereto, and the end effector includes a shuttle that slides proximally from a first position to a second position in response to seating of the staple cartridge fully within the channel in the cartridge jaw.
- the shuttle prevents at least one of closure of the anvil and the cartridge jaw to engage tissue and firing of staples from the cartridge when the shuttle is in the first position and prior to the staple cartridge being fully seated within the channel in the cartridge jaw.
- movement of the shuttle from the first position to the second position causes a pin extending through a central aperture in the shuttle to move from a first position to a second position.
- positioning of the cartridge within the channel in the cartridge jaw moves the pin into one of the second position and a third position, wherein the cartridge jaw and the anvil have a first clamp gap height when the pin is in the second position, and the cartridge jaw and the anvil have a second clamp gap height when the pin is in the third position, the second clamp gap height differing from the first clamp gap height.
- like-named components of the embodiments generally have similar features, and thus within a particular embodiment each feature of each like-named component is not necessarily fully elaborated upon.
- linear or circular dimensions are used in the description of the disclosed systems, devices, and methods, such dimensions are not intended to limit the types of shapes that can be used in conjunction with such systems, devices, and methods.
- a person skilled in the art will recognize that an equivalent to such linear and circular dimensions can easily be determined for any geometric shape. Sizes and shapes of the systems and devices, and the components thereof, can depend at least on the anatomy of the subject in which the systems and devices will be used, the size and shape of components with which the systems and devices will be used, and the methods and procedures in which the systems and devices will be used.
- proximal and distal are used herein with reference to a user, such as a clinician, gripping a handle of an instrument.
- Other spatial terms such as “front” and “back” similarly correspond respectively to distal and proximal.
- spatial terms such as “vertical” and “horizontal” are used herein with respect to the drawings. However, surgical instruments are used in many orientations and positions, and these spatial terms are not intended to be limiting and absolute.
- FIG. 1 illustrates one embodiment of a surgical device 1100 that is configured to apply staples to tissue.
- the device 1100 in this illustrated embodiment includes a linear stapler configured to apply linear rows of staples.
- Other embodiments of surgical devices that are configured to apply staples to tissue are described in U.S. Pat. No. 5,465,895 entitled “Surgical Stapler Instrument” filed February 3, 1994, U.S. Pat. No. 7,000,818 entitled “Surgical Stapling Instrument Having Separate Distinct Closing And Firing Systems” filed May 20, 2003, U.S. Pat. No. 7,669,746 entitled “Staple Cartridges For Forming Staples Having Differing Formed Staple Heights” filed on August 31, 2005, and U.S. Pat. Pub. No. 2014/0175146 entitled “Microcutter Stapling Apparatus Clamp And Deploy Mechanisms Systems And Methods” filed December 19, 2013, which are hereby incorporated by reference in their entireties.
- the device 1100 includes a proximal handle portion 1102 having an elongate shaft 1104 extending distally therefrom.
- the shaft 1104 has an end effector 1106 coupled to a distal end thereof.
- the end effector 1106 is coupled to the shaft 1104 at a pivot joint 1108.
- a proximal end of the end effector 1106 is pivotally coupled to the joint 1108 at a distal end of the shaft 1104.
- the end effector 1106 in this illustrated embodiment includes a tissue grasper having a pair of opposed first and second jaws 1110a, 1110b configured to move between open and closed positions.
- the first jaw is also referred to herein as a "bottom jaw” and a “cartridge jaw,” and the second jaw is also referred to herein as an "upper jaw” and an “anvil.”
- the handle portion 1102 is configured to be manipulated to effect the opening and closing of the opposed jaws 1110a, 1110b, e.g., movement of one or both the jaws 1110a, 1110b about the pivot joint 1108, and the handle portion 1102 is configured to be manipulated to effect the firing of staples (not shown) from a one of the jaws 1110a, 1110b, e.g., a bottom or cartridge one of the jaws 1110a.
- the staple firing is independent of the opening and closing of the jaws 1110a, 1110b.
- the handle portion 1102 can have a variety of sizes, shapes, and configurations. As illustrated, The handle portion 1102 includes a main housing 1121, which houses a variety of elements therein and has some elements accessible outside thereof, such as a movable trigger 1122 and a stationary handle 1124.
- the movable trigger 1122 is configured to be manually manipulated to move the movable trigger 1122 relative to the stationary handle 1124 so as to, e.g., effect closing of the jaws 1110a, 1110b.
- the shaft 1104 can have a variety of sizes, shapes, and configurations.
- the shaft 1104 is rigid, e.g., made from a generally non-bendable material such as a metal (e.g., stainless steel, titanium, etc.) or a hard polymer.
- the shaft 1104 can be configured to bend, such as being made from a generally flexible material, by including one or more articulation regions, etc.
- the shaft 1104 can have any longitudinal length, although in an exemplary embodiment it is long enough to allow the handle portion 1102 to be manipulated outside a patient's body while the shaft 1104 extends through an opening in the body with the end effector 1106 disposed within a body cavity.
- the shaft 1104 can have any suitable diameter.
- the shaft's diameter can be less than or equal to about 10 mm, e.g., less than or equal to about 7 mm, less than or equal to about 5 mm, etc., which allows for insertion of the shaft 1104 through an minimally invasive access device, e.g., a trocar, a cannula, a multiport access device, etc., such as during a laparoscopic surgical procedure.
- the end effector 1106 coupled to the shaft's distal end can have a diameter equal to or less than the shaft's diameter, at least when the jaws 1110a, 1110b are in the closed position, which facilitates insertion of the device's distal portion into a patient's body.
- the end effector 1106 can have a variety of sizes, shapes, and configurations.
- the end effector 1106 is rigid.
- the end effector 1106 including the first and second jaws 1110a, 1110b is disposed at a distal end of the surgical device 1100. in this illustrated embodiment, when the jaws 1110a, 1110b move between the open and closed positions, the second jaw 1110b is configured to remain stationary relative to the shaft 1104, and the first jaw 1110a is configured to move relative to the shaft 1104 and the second jaw 1110b by pivoting at the pivot joint 1108.
- the end effector 1106 is configured to releasably and replaceably seat a cartridge 1112 therein, as shown in FIG. 3 and FIG. 4 . In this way, when the staples have been fired from the cartridge 1112, the cartridge 1112 can be removed from the second jaw 1110b and, optionally, replaced with another cartridge having another plurality of staples disposed therein.
- FIG. 2 shows the end effector 1106 without the cartridge 1112 seated therein.
- the end effector 1106 is configured to receive the cartridge 1112 in the first jaw 1110a thereof, e.g., in a channel formed in the first jaw 1110a.
- the first jaw 1110a can be configured to seat cartridges of different sizes, thereby facilitating versatility of the device 1100.
- the cartridge 1112 can have a variety of sizes, shapes, and configurations, as will be appreciated by a person skilled in the art. As shown in FIG. 4 , FIG. 5, and FIG. 6 , the cartridge 1112 includes a sled 1120 and has a plurality of staples 1116 disposed therein. The sled 1120 is also illustrated in FIG. 7 and FIG. 8 . The cartridge 1112 includes a plurality openings 1114 formed in a tissue engaging surface 1118 thereof, as shown in FIG. 3 , FIG. 5, and FIG. 6 .
- the staples 1116 disposed in the cartridge 1112 may be configured to be ejected from the cartridge 1112 through the openings 1114, e.g., one staple 1116 out of each opening 1114 (as in this illustrated embodiment), two staples out of each opening 1114, etc.
- the openings 1114 define staple-receiving recesses of the cartridge 1112 in which the staples 1116 are seated prior to being ejected from the cartridge 1112.
- the staples 1116 can have a variety of sizes, shapes, and configurations.
- the staples 1116 each have a D-shape and include a first leg that is substantially straight and a second leg that is curved.
- the first leg may not be precisely straight, e.g., due to manufacturing tolerances, but nevertheless be considered to be substantially straight.
- Each of the staples 1116 is configured to be plastically deformable such that the staples 1116 can each be configured to change shape, such as when the staple 1116 is pressed against a tissue engaging surface (not shown) of the first jaw 1110a that faces the tissue engaging surface 1118 of the second jaw 1110b, while remaining a single unit, e.g., without either of the first and second legs breaking.
- a gap of space exists between a terminal end of the first leg and a terminal end of the second leg.
- the "D" shape has a gap therein. The gap of space facilitates plastic deformation of the staple 1116.
- the staples 1116 are each frangibly attached to a carrier 1126, also referred to herein as a "carrier strip,” disposed within the cartridge 1112.
- the staples 1116 can be frangibly attached to the carrier 1126 by, e.g., being stamped together with the carrier 1126 such that the staples 1116 and the carrier 1126 forms a single piece.
- the staples 1116 can each be configured to detach from the carrier 1126 when fired from the cartridge 1112.
- some or all of the staples 1116 can be frangibly attached to another element, such as another element disposed within the cartridge 1112, an inner surface of the cartridge 1112, the tissue-engaging surface 1118 of the cartridge 1112, etc.
- the carrier 1126 can be fixedly attached to an upper surface of one or more rails 1128 defined by the cartridge 1112.
- the carrier 1126 is configured to remain stationary relative to the cartridge 1112.
- the cartridge 1112 has a longitudinal slot 1130 formed therein.
- the longitudinal slot 1130 extends along a substantially flat central portion 1118f of the tissue-engaging surface 1118.
- the slot 1130 is configured to have a cutting element such as a knife (not shown) extend therethrough so as to cut tissue engaged by the tissue-engaging surface 1118, as discussed further below.
- the openings 1114 can be formed in angled portions 1118a of the tissue-engaging surface 1118 on both sides of the slot 1130, as shown in FIG. 3 , FIG. 5, and FIG. 6 .
- the tissue-engaging surface 1118 is substantially flat, e.g., not have angled portions, while in other embodiments, the tissue-engaging surface 1118 can be angled, e.g., not have any substantially flat portions.
- the cartridge 1112 includes a gap-setting feature 1142 configured to set of gap of space between the first and second jaws 1110a, 1110b when the jaws 1110a, 1110b are closed and the cartridge 1112 is seated in the second jaw 1110b.
- the gap-setting feature 1142 defines a minimum distance between the facing tissue-engaging surfaces of the first and second jaws 1110a, 1110b.
- the gap-setting feature 1142 can have a variety of sizes, shapes, and configurations.
- the gap-setting feature 1142 includes an indentation inward toward a lateral center of the cartridge 1112, where a portion of a lateral edge of the cartridge 1112 immediately proximal to the gap-setting feature 1142 is located laterally inward relative to a portion of a lateral edge of the cartridge 1112 located immediately distal to the gap-setting feature 1142.
- the sled 1120 of the cartridge 1112 can have a variety of sizes, shapes, and configurations.
- the sled 1120 is configured to translate longitudinally along the cartridge 1112 to cause deployment of the staples 1116 therefrom and to cause tissue engaged by the end effector 1106 to be cut with the cutting element extending through the slot 1130.
- the staples 1116 are arranged longitudinally in the cartridge 1112, as shown in FIG. 4 , and the sled 1120 is configured to sequentially engage the longitudinally arranged staples 1116 as the sled 1120 translates longitudinally.
- the sled 1120 includes a plurality of wedges 1136 and includes a cutting element 1134, which in this illustrated embodiment includes a knife with a blade 1132.
- the sled 1120 in this illustrated embodiment includes four wedges 1136 but the sled 1120 can include any other number of wedges 1136 as appropriate for the arrangement of the staples 1116 in the cartridge 1112.
- Each of the wedges 1136 has a shape configured to cause the staples 1116 contacted by that wedge 1136 to move upward toward the second jaw 1110b through the openings 1114 and deform against the second jaw 1110b.
- the cartridge 1112 includes a plurality of longitudinal slots 1150 formed therein, each of the slots 1150 being configured to slidably receive one of the wedges 1136 therein. The slots 1150 facilitate consistent, straight movement of the wedges 1136 through the cartridge 1112 to help ensure proper engagement of the wedges 1136 with the staples 1116.
- Each of the wedges 1136 is attached to a base 1138 of the sled 1120 and is in a fixed position relative thereto.
- the base 1138 has a guide element 1139 extending generally downward therefrom.
- the guide element 1139 is configured to slide within a channel formed in the cartridge 1112 that includes the sled 1120.
- the cutting element 1134 can also be attached to the base 1138, but the cutting element 1134 can instead be configured to move relative to the base 1138.
- the cutting element 1134 can be substantially laterally centered in the base 1138, which facilitates substantially central positioning of the cutting element 1134 relative to tissue engaged by the end effector 1106.
- the cutting element 1134 is movable relative to the remainder of the sled 1120 between a first position, shown in FIG. 7 , and a second position, shown in FIG. 6 and FIG. 8 .
- the first position is an initial position of the cutting element 1134.
- the blade 1132 In the first position, also referred to herein as a "stowed position," the blade 1132 is generally obscured, e.g., oriented generally downward as shown in the embodiment of FIG. 4 , FIG. 5 , FIG. 6 , and FIG. 7 , which helps prevent the blade 1132 from inadvertent cutting, such as accidentally cutting a user of the device 1100 during seating of the cartridge 1120 within the end effector 1104 and/or premature cutting of tissue engaged by the end effector 1104.
- the base 1138 has a cavity 1144 formed therein, as shown in FIG. 6 , which is configured to seat the cutting element 1134 at least partially therein when the cutting element 1134 is in the first position.
- the blade 1132 In the second position, also referred to herein as an "upright position," the blade 1132 is generally unobscured and facing distally as shown in the embodiment of FIG. 6 and FIG. 8 , which allows the blade 1132 to extend through the slot 1130 and cut tissue engaged by the end effector 1106.
- the sled 1120 includes a pivot member 1140 configured to facilitate movement of the cutting element 1134 relative to the remainder of the sled 1120.
- the pivot member 1140 can have a variety of sizes, shapes, and configurations.
- the pivot member 1140 is attached to the cutting element 1134 such that engagement of the pivot member 1140 causes the cutting element 1134 to pivot about a pivot point so as to move relative to the remainder of the sled.
- the pivot member 1140 includes two separate pins extending laterally from opposite sides of the cutting element 1134.
- the pivot member 1140 can include a single pin extending through the cutting element 1134 to extend laterally from opposite sides therefrom, a single pin extending laterally from one side of the cutting element 1134, etc.
- the sled 1120 includes a pivot axle 1146 extending laterally from the cutting element 1134, and includes an axle cavity 1148 formed in the base 1138 and configured to receive the pivot axle 1146 therein.
- the surgical devices described herein can be used in a variety of surgical procedures.
- the procedure can be a minimally invasive procedure in which the surgical device is advanced into a body of a patient through a relatively small opening in the patient.
- one or more introducer devices e.g., a cannula, a trocar, etc., may be advanced through an opening in the patient to provide access to a surgical site.
- one or more viewing devices e.g., a scoping device such as an endoscope
- a scoping device such as an endoscope
- the surgical device can be advanced into the patient's body in a variety of ways, such as by being inserted transorally therein, inserted through an introducer device, inserted through a scoping device, inserted directly through an incision, etc.
- the surgical devices described herein can have any one or more variations to facilitate effective use of the device. Examples of such variations are described further below.
- a surgical device such as the above-mentioned surgical device 1100 can be configured to prevent at least one of closure of the end effector and firing of fasteners from the end effector when a cartridge is not fully seated in the end effector.
- the cartridge can be configured to be removably coupled to the end effector, as discussed herein.
- the cartridge can be improperly loaded into the end effector such that the cartridge is not fully seated therein.
- the end effector can be advanced into a body of a patient without a cartridge seated in the end effector at all.
- Preventing closure of an end effector and/or firing of fasteners from the end effector when a cartridge is not fully seated in the end effector indicates to a user of the device that either the end effector does not have a cartridge seated therein at all or that the cartridge engaged with the end effector is not fully seated therein. The user is thus aware that the device needs adjustment, either by seating a cartridge therein or readjusting the cartridge already attempted to be seated therein. Preventing closure of an end effector and/or firing of fasteners from the end effector when a cartridge is not fully seated in the end effector helps to prevent the device and/or a cartridge partially seated in the end effector from being damaged by an attempt to close the end effector and/or an attempt to fire fasteners.
- a surgical device including an end effector configured to removably seat a cartridge includes a lockout element configured to prevent closure of the end effector or firing of fasteners from the end effector when a cartridge is not fully seated in the end effector.
- the lockout element is configured to move between first and second positions.
- the lockout element being in the first position indicates that no cartridge is seated in the end effector or that a cartridge is improperly seated in the end effector.
- the lockout element being in the second position indicates that a cartridge is fully seated in the end effector.
- the lockout element is configured to dynamically move between the first and second positions. Fully seating a cartridge in the end effector causes the locking element to dynamically move from the first position to the second position.
- Partial or full removal of a fully seated cartridge from the end effector causes the locking element to move from the second position to the first position.
- the locking element is thus configured to provide an automatic safety feature by being configured to automatically prevent firing and/or prevent closing of the end effector if a cartridge is not fully seated in the end effector.
- a surgical device may be configured to prevent at least one of closure of the end effector and firing of fasteners from the end effector in a variety of ways.
- staples are used as examples of fasteners, but as will be appreciated by a person skilled in the art, other types of fasteners can be similarly configured and used.
- a lockout element can be in the form of a cam plate, also referred to herein as a "shuttle.”
- FIG. 9 and FIG. 10 illustrate one embodiment of a surgical device that includes an elongate shaft 7000 and an end effector 7008 coupled to a distal end of the elongate shaft 7000.
- the end effector 7008 includes a first jaw 7002 pivotally coupled to a second jaw 7004 via a pivot pin 7010.
- the first and second jaws 7002, 7004 in this illustrated embodiment are identical to the above-mentioned first and second jaws 1110a, 1110b, which is configured to open/close similarly to that discussed herein for the first and second jaws 7002, 7004, but the device that includes the first and second jaws 7002, 7004 of this illustrated embodiment also includes a locking element configured to prevent closure of the end effector 7008 or firing of fasteners (not shown) from the end effector 7008 when a cartridge 7012 is not fully seated in the end effector 7008.
- FIG. 9 shows the cartridge 7012 partially seated in the bottom jaw 7002 such that the end effector 7008 cannot close and fasteners cannot be fired from the cartridge 7012.
- FIG. 10 shows the cartridge 7012 fully seated in the bottom jaw 7002 such that the end effector 7008 can close, as indicated by an arrow 7024 in a direction of closure and by the anvil 7004 in phantom in FIG. 10 , and fasteners can be fired from the cartridge 7012.
- the anvil 7004 includes a first slot 7018 formed in a proximal portion thereof.
- the slot 7018 is configured to receive a guide pin 7028 at a distal end of a drive rod 7030 configured to translate along the shaft 7000 to effect opening and closing of the end effector 7004.
- the guide pin 7028 is configured to slide distally within the guide slot 7018 to close the end effector 7008 by causing the anvil 7004 to move toward the bottom jaw 7002, and is configured to slide proximally within the guide slot 7018 to open the end effector 7008 by causing the anvil 7004 to move away from the bottom jaw 7002.
- the bottom jaw 7002 includes a second slot 7020 formed therein.
- the slot 7020 is configured to slidably receive the guide pin 7028 therein that also slides within the first closure slot 7018.
- the first and second slots 7018, 7020 via movement of the guide pin 7028 therein cooperate to facilitate opening and closing of the end effector 7004.
- the anvil 7004 has first slots 7018 formed in opposed lateral sides thereof
- the bottom jaw 7002 has second slots 7020 formed in opposed lateral sides thereof.
- the bottom jaw 7002 includes a third slot 7022 formed therein that is configured to slidably receive the pivot pin 7010 therein. Although only one third slot 7022 is shown in FIG. 9 and FIG. 10 , the bottom jaw 7002 has third slots 7022 formed in opposed lateral sides thereof.
- the pivot pin 7010 can have a variety of sizes, shapes, and configurations.
- the pin 7010 can be a single pin laterally spanning the end effector 7008, or the pin 7010 includes two pins extending laterally.
- the pin 7010 is attached to the anvil 7004 in a fixed position relative thereto, and is movably coupled to the bottom jaw 7002.
- the bottom jaw 7002 has a slot 7014 formed therein in which the pin 7010 is slidably movable.
- the anvil 7004 has a pin receiving hole 7016 formed therein configured to fixedly receive the pin 7010 therein.
- the pin 7010 can be integrally formed with the anvil 7004.
- the pivot pin 7010 is configured to be slidably received within a cam plate 7026.
- the cartridge jaw 7002 thus has two cam plates 7026 disposed therein, one at each of the laterally opposed second slots 7020 formed in the cartridge jaw 7002.
- the cam plate 7026 includes a center opening 7030 formed therethrough.
- the center opening 7030 is defined by a bottom wall 7030b, an upper wall 7030u, a distal wall 7030d, and a proximal wall 7030p.
- the center opening 7030 includes a proximal extension 7032 in an upper portion thereof.
- the proximal end of the center opening 7030 is at a higher position, e.g., more toward the anvil 7004, than the aperture's distal end.
- the cam plate 7026 is disposed within the bottom jaw 7002 along an inner surface thereof adjacent the second slot 7020.
- the cam plate 7026 includes a proximal tail 7034 in a bottom portion thereof.
- the proximal tail 7034 is coupled to a bias element 7036, e.g., a coil spring wound around the tail 7034 in this illustrated embodiment.
- the bias element 7036 is configured to bias the cam plate 7026 in a distal direction, e.g., away from the proximal extension such that the pin 7010 is configured to be biased to be in the proximal extension 7032.
- the proximal extension 7032 is configured to seat the pin 7010 therein when the end effector 7004 does not have the cartridge 7012 fully seated therein, as shown in FIG. 9 and FIG. 12 .
- the bias element 7036 facilitates this seating.
- the cartridge 7012 is configured to move the cam plate 7026 proximally so as to shift a position of the pin 7010 within the aperture 7030.
- the length of the proximal extension 7032 in a proximal/distal direction can define how much the cam plate 7026 must move proximally before the pin 7010 can exit the proximal extension 7032 so as to move in a downward direction toward the bottom surface 7030b of the aperture 7030, as shown in FIG. 10 in which the pin 7010 has moved downward to the bottom surface 7030b.
- the pin 7010 not having exited the proximal extension 7032 indicates that the cartridge 7012 has not been fully seated in the bottom jaw 7002, as shown in FIG. 9 and FIG. 13 , as the cartridge 7012 has not caused the pin 7010 to exit the proximal extension 7032.
- the pin 7010 being in the proximal extension 7032 effectively causes the pivot point about which the jaws 7002, 7004 pivot to a higher position, which can prevent closure of the jaws 7002, 7004.
- FIG. 13 also shows that when the cartridge 7012 has not been fully seated in the bottom jaw 7002, and the end effector 7008 has hence not been fully closed, the lockout element is configured to prevent the end effector 7008 from being inserted into a patient's tissue (not shown) to access a body cavity (not shown) underneath the tissue by abutting an access device 7006 disposed within the tissue through which the end effector 7008 is attempting to be advanced.
- the access device 7006 includes a trocar in this illustrated embodiment, but other types of access devices can be similarly used, as will be appreciated by a person skilled in the art.
- the access device 7006 includes a port 7038 extending therethrough through which the end effector 7006 can be inserted.
- the port 7038 has a diameter.
- the end effector 7006 has a diameter in the closed position corresponding to the port's diameter such that with the lockout element locking out closing/firing when the cartridge 7012 has been improperly loaded or not loaded at all, the end effector's 7006 diameter can be effectively increased. This increased diameter prevents the end effector 7006 from being advanced through the access device 7006.
- FIG. 14 and FIG. 15 illustrate an alternate embodiment of a cam plate 7040 that is configured and used similarly to the cam plate 7026 of FIG. 12 .
- the cam plate 7040 in this illustrated embodiment includes an upper proximal extension 7042 and a lower proximal extension 7044.
- the cam plate 7040 includes a bias element (not shown) at a proximal tail 7058 thereof.
- the pivot pin 7052 is configured to be seated in the upper proximal extension 7042, whereby an I-beam 7052 is properly aligned with the anvil 7050 so as to allow a guide pin 7054 of the I-beam 7052 to translate along the anvil 7050 in a channel 7056 formed therein to facilitate end effector closing and clamping.
- the I-beam 7052 e.g., the guide pin 7054 thereof, is misaligned from the anvil 7050, e.g., the channel 7056 thereof, thereby preventing the I-beam 7052 from translating through the anvil 7050 such that fasteners cannot be fired from the cartridge 7046.
- a lockout element can be in the form of a deflectable member.
- FIG. 18, FIG, 19 , and FIG. 20 illustrate one embodiment of a surgical device that includes a lockout element in the form of a deflectable member 7058.
- the deflectable member 7058 can have a variety of sizes, shapes, and configurations. in this illustrated embodiment, the deflectable member 7058 includes a spring member.
- the spring member 7058 includes two deflectable arms 7058a, 7058b extending in a distal direction.
- the spring member 7058 is attached to the I-beam 7060, such as by being attached to a bottom side thereof with the arms 7058a, 7058b extending distally therefrom.
- the deflectable member 7058 is configured to automatically move from a first position, in which the deflectable member 7058 is not engaged with a cartridge 7062, to a second position, in which the deflectable member 7058 is engaged with the cartridge 7062, in response to the cartridge 7062 being fully seated in a bottom jaw 7064 movably coupled to an upper jaw 7066.
- the deflectable member 7058 is also configured to automatically move from the second position to the first position in response to the cartridge 7062 being removed from the bottom jaw 7064.
- the deflectable member 7058 is a passive element that does not require positive user action in order for the lockout member 7058 to effectively provide lockout when the cartridge 7062 is improperly seated in the bottom jaw 7064 or is not seated therein at all.
- the deflectable member 7058 is in the first position, as shown in FIG. 19 , the I-beam 7060 is prevented from translating through the anvil 7050, e.g., by crashing against the anvil 7050 instead of translating therealong.
- the deflectable member 7058 is in the second position, as shown in FIG. 20 , the I-beam 7060 can translate through the anvil 7050.
- the first position is a default position of the deflectable member 7058 such that the I-beam 7060 is prevented from translating through the anvil 7050 unless the cartridge 7062 is fully seated in the bottom jaw 7064.
- the deflectable member 7058 in the second position can be configured to engage the cartridge 7062 in a variety of ways.
- the deflectable member 7058 is configured to engage a sled 7068 of the cartridge 7062 to which a cutting element 7074 is movably coupled, as discussed herein.
- the deflectable member 7058 is configured to engage the sled 7068 by the arms 7058a, 7058b by abutting a proximal surface 7070 of the sled 7068.
- the sled 7068 has an initial position at a proximal end of the cartridge 7062, as shown in FIG. 18, FIG, 19 , and FIG. 20 .
- the deflectable member 7058 When the cartridge 7062 has not been fully seated in the bottom jaw 7064, as shown in FIG. 19 , the deflectable member 7058 is in the first position and not engaged with the sled 7068, e.g., not in contact with the sled's proximal surface 7070. In the first position, the deflectable member 7058 is in a lower position in a direction away from the anvil 7066. In this lower position, the deflectable member 7058 is positioned distal to a foot 7072 of the I-beam 7060 and is positioned in a translation path thereof through which the foot 7072 is configured to translate to effect firing of fasteners (not shown) from the cartridge 7062. When the cartridge 7062 is fully seated in the bottom jaw 7064, as shown in FIG.
- the deflectable member 7058 is in the second position and is engaged with the sled 7068, e.g., in contact with the sled's proximal surface 7070.
- the deflectable member 7058 In the second position, the deflectable member 7058 is in a higher position in a direction toward the anvil 7066. In this higher position, the deflectable member 7058 is positioned distal to a foot 7072 of the I-beam 7060 but positioned out of the translation path thereof through which the foot 7072 is configured to translate to effect firing of the fasteners from the cartridge 7062.
- the deflectable member 7058 in the second position thus allows firing, while the deflectable member 7058 in the first position prevents firing.
- the deflectable member 7058 being in either the first position or the second position facilitates determination as to whether fasteners have been fired from the cartridge 7062 since the deflectable member's lockout relies on the sled 7068 being in its initial proximal position. For example, if a cartridge from which fasteners have already been fired is loaded into the bottom jaw 7064, the cartridge's sled is already in its distal, fired position. The deflectable member 7058 thus cannot engage the sled and firing cannot occur until the cartridge is removed from the bottom jaw 7064 and replaced with another, non-spent cartridge.
- the devices disclosed herein can also be designed to be disposed of after a single use, or they can be designed to be used multiple times. In either case, however, the device can be reconditioned for reuse after at least one use. Reconditioning includes any combination of the steps of disassembly of the device, followed by cleaning or replacement of particular pieces and subsequent reassembly.
- the device can be disassembled, and any number of the particular pieces or parts of the device can be selectively replaced or removed in any combination.
- the device can be reassembled for subsequent use either at a reconditioning facility, or by a surgical team immediately prior to a surgical procedure.
- reconditioning of a device can utilize a variety of techniques for disassembly, cleaning/replacement, and reassembly. Use of such techniques, and the resulting reconditioned device, are all within the scope of the present application.
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Applications Claiming Priority (1)
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US14/474,772 US9943312B2 (en) | 2014-09-02 | 2014-09-02 | Methods and devices for locking a surgical device based on loading of a fastener cartridge in the surgical device |
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EP2992834A1 true EP2992834A1 (de) | 2016-03-09 |
EP2992834B1 EP2992834B1 (de) | 2018-12-19 |
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US9943312B2 (en) | 2018-04-17 |
US20160058447A1 (en) | 2016-03-03 |
EP2992834B1 (de) | 2018-12-19 |
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